Search for FSM's

Hello everyone,I am looking for some feedback concerning a FSM source by the name of Faxon.Found them on the web.Are they straight shooters,any delivery problems or billing problems? I am looking to pickup a 4 book seet of FSM for GM CK pickups (their price is about 119.00)

Does anyone look at used bookstores for FSM’s? I picked up one for a 91 Bravada for $10.00,(I don’t own one) It has all the general GM stuff so I figured $10.00 OK, any feedback appreciated.